Typo.

Lib/test/support.py

@@ -1200,7 +1200,7 @@ def modules_cleanup(oldmodules):
     sys.modules.clear()
     sys.modules.update(encodings)
     # XXX: This kind of problem can affect more than just encodings. In particular
-    # extension modules (such as _ssl) don't cope with releoding properly.
+    # extension modules (such as _ssl) don't cope with reloading properly.
     # Really, test modules should be cleaning out the test specific modules they
     # know they added (ala test_runpy) rather than relying on this function (as
     # test_importhooks and test_pkg do currently).